Self-binding cover for unbound matter.



F. J. TRUMPER."

SELF BINDING COVER FOR UNBOUND MATTER.

APPLICATION FILED MAR.16, 1912.

1,052,531. I Patented Feb.11,1913.

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COLUMBIA PLANOGRAPH col, WASHINGTON, D. c.

FREDERICK 3'.

TRUMPER, OF CLEVELAND, OHIO.

SELF-BINDING COVER FOR UNBOUND MATTER.

Application filed March 16, 1912.

To all whom it may concern:

Be it known that I, FREDERICK J. TRUMPER, citizen of the United States,residing at Cleveland, in the county of Guyahoga and State of Ohio, haveinvented certain new and useful Improvements in Self- Binding Covers forUnbound Matter, of which the following is a specification.

This invention relates to an extensible self-binding cover for otherwiseunbound matter, printed or plain, such as, single leaves or sheets ofpaper, sheet music and other like prints or publications, records insingle or two or more sheets or pages, memorandum slips, bills,leaflets, pamphlets and publications that issue periodically and likematter in great variety, the idea being to provide a stifif cover inwhich it is convenient to make additions and removals from time to timeand which can be extended to any desired size or thickness withinreasonable limits.

In the accompanying drawings, Figure 1 is a perspective View ofthe-cover with matter bound therein and showing the back connecting thesides of the cover, and Fig. 2 is a perspective View of my new andoriginal cover shown as open, and Fig. 3 is a sectional view of one ofthe cover sections or members alone, and Fig. at is a perspective viewof a modification of the back and cover.

As thus shown the two parts, sections, halves or members of the cover inFigs. 1 to 55 inclusive are separate and distinct parts as articles ofmanufacture and interchangeable unless there be print or mark thereon tofix one as the front and the other as the back member. The said partsare necessarily stiff and maybe finished in cloth,leather or paper, andin the preferred form each section or part has a clamping strip 2 acrossits inner edge which is about an inch in width and united by a fabric orother hinge to the said cover section as will presently be described.Two or more eyelets 3 are provided in each of the said strips throughwhich to engage the fastening staples 4, or their equivalent, and saidstaples penetrate through both said strips and the material held betweenthe same as to bind all firmly together, corresponding holes beingpunched through said material. Obviously, any available or preferredmeans or devices may be employed in lieu of the said staples & forbinding the parts together, but whatever fastening be used it mustaccommodate Specification of Letters Patent. Patented Feb, 11, 1913.

Serial No. 684,141.

itself to this particular style of cover and back, which has theadvantage of bringing the clamping strips so close together that asingle leaf, sheet or slip of paper can be fastened between them as wellas many. This, in fact, is one of the especial and valuable features ofthe present invention in all its forms, and while fairly long staples 4are shown for this purpose they necessarily have their limitations andthey are only one of several difierent kinds of devices or means thatmay be employed for this purpose. For fairly heavy binding, as formagazines and the like, a suitable tape or cord gives very goodsatisfaction.

Now, having separate covers or sides of a complete cover constructedsubstantially as shown and described, the cover is incomplete without asuitable back, consisting of a strip of starched linen or the like asindicated by b. The use of this particular style of back necessarilyrequires a specially formed cover having details beyond what havealready been described, and to this end each of the cover members isshown as made with a stifi outer or cover board a of any suitablematerial, such as card-board or pasteboard. This board is enveloped by asingle sheet of suitably strong paper, book-binders fabric, leather orthe like, but preferably paper which is stretched over the board a and.has inturned flaps 6 lapped and pasted on the ends of said board to holdit'in place, while the paper otherwise is stretched and pasted at itsown overlapped edges on the inside of the cover, thus making an envelopin which the cover board a is permanently secured but leaving an openspace on the inside from end to end and from edge to edge between thesaid parts. This practically forms a pocket between the said board andits envelop d, and a card-board 0 or the like of the same length andwidth as the cover, in this instance, is fixed centrally in this pocketand the fabric hinge of the strip 2 is pasted between the same andthepaper cover d so as to engage both and make a firm hold. This also fiXesthe board a in respect to the paper cover cl, closing the inner pocketat its bottom or at said hinge but leaving it full open otherwise. Ineffect,

the outer edges of board a and passed in between the said board and thepaper or en velop d on the inside. The sharp reverse bend of the backacross the edge of board c and its confinement otherwise locks the backagainst pulling out or yielding and secures it about as effectually asif it were fixedly secured therein. Then as additional sheets or thelike are to be incorporated and more room is required the said back islet out to meet the changes, the adjustments always taking place byreleasing one or the other end of the back over the edge of board forthis purpose.

Both cover sections or sides are shown herein as duplicates, but in somecases I can provide all the extension the back needs from the surplusstock of the back in only one of the covers, in which case the other endof the back is permanently secured to the cover section or member onthat side.

Of course the fastening of the sides of the cover together actuallyoccurs through the staples and binding strips, so that there really isnot much pull or strain on the back as such though it will stand a greatdeal without surrender and serves all the purposes of backs in booksgenerally.

In Fig. 4 I show a modification in which the clamping strips are omittedfro-m the cover and a single strip is fixed across the middle of theback. In this construction I build the sheets or prints to be bound onopposite sides of the said strip and fasflexible back having its endsslidably pro-- jected into said openings and adapted to be lapped overthe outer edge of said board at greater or less depth according to thethickness of the stock to be bound.

2. In temporary bindings as described, separate cover sections havingpockets lengthwise open at their inner ends and division boards fixed insaid pockets free in their body portions and having their ends securedin respect to said cover sect-ions, a flexible back adjustably lapped insaid sections over said division boards, clamping,

strips on said sections and means to bind the material between saidstrips.

In testimony whereof I affix my signature in presence of two witnesses.

FREDERICK J. .TRUMPER.

lVitnesses E. M. FISHER, F. G. MUssUN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

